{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:NXM2BVKW3TR2BHOWZVTG53ONVH","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"43c2331c72c07051720a337aa5aaa63e2e2f05931b006778ece0e406e5db55fc","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-06T12:07:10Z","title_canon_sha256":"f9eff12098e8cd40945ecf4bac645790ca7b47aa5f738521123624c9705ca10f"},"schema_version":"1.0","source":{"id":"1701.01607","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01607","created_at":"2026-05-18T00:48:43Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01607v1","created_at":"2026-05-18T00:48:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01607","created_at":"2026-05-18T00:48:43Z"},{"alias_kind":"pith_short_12","alias_value":"NXM2BVKW3TR2","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"NXM2BVKW3TR2BHOW","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"NXM2BVKW","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:8bf6ade3d6ce77b19b6bd782684baec5a73582479782ddc224d32254538eb9d9","target":"graph","created_at":"2026-05-18T00:48:43Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"3D non-LTE radiative transfer problems are computationally demanding, and this sets limits on the size of the problems that can be solved. So far Multilevel Accelerated Lambda Iteration (MALI) has been to the method of choice to perform high-resolution computations in multidimensional problems. The disadvantage of MALI is that its computing time scales as $\\mathcal{O}(n^2)$, with $n$ the number of grid points. When the grid gets finer, the computational cost increases quadratically. We aim to develop a 3D non-LTE radiative transfer code that is more efficient than MALI. We implement a non-line","authors_text":"Johan P. Bj{\\o}rgen, Jorrit Leenaarts","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-06T12:07:10Z","title":"Numerical non-LTE 3D radiative transfer using a multigrid method"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01607","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:a78afeb35b7f13e25b697d165b1ec1a8e487ebe7ba0a9f57c42049bb45cd2304","target":"record","created_at":"2026-05-18T00:48:43Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"43c2331c72c07051720a337aa5aaa63e2e2f05931b006778ece0e406e5db55fc","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-06T12:07:10Z","title_canon_sha256":"f9eff12098e8cd40945ecf4bac645790ca7b47aa5f738521123624c9705ca10f"},"schema_version":"1.0","source":{"id":"1701.01607","kind":"arxiv","version":1}},"canonical_sha256":"6dd9a0d556dce3a09dd6cd666eedcda9c782ae283a44c3389175e5dd03ede805","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6dd9a0d556dce3a09dd6cd666eedcda9c782ae283a44c3389175e5dd03ede805","first_computed_at":"2026-05-18T00:48:43.633939Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:43.633939Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PbjdY8lrOD3zBN2/BTrx3wBYE71RUqdvv9gWu0L43KFmwk/+qzo7B8B4GTRhZ34n9upw4Wx6e9DFwjbJ+L+QAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:43.634648Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.01607","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a78afeb35b7f13e25b697d165b1ec1a8e487ebe7ba0a9f57c42049bb45cd2304","sha256:8bf6ade3d6ce77b19b6bd782684baec5a73582479782ddc224d32254538eb9d9"],"state_sha256":"bf51e4461cf8fd163ce36ebc009a972fd0da3b5c81b22129fbddb22ff5408c95"}